Java FileWriter Class

Java FileWriter Class:

We can use the Eclipse IDE for this example. If you do not know about it then follow this link- How to Install Eclipse For Java and create a program in it.

Java FileWriter Class extends OutputStreamWriter class and is a convenient class for writing character files. When a file is created and it does not exist prior to its creation, it will be created. In case a read-only file is attempted to open, an IOException will be thrown. Some of the constructor forms of this class are shown as follows.

Constructor	Description
FileWriter (String file)	Creates a new file. It gets the file name in a string.
FileWriter (File file)	Creates a new file. It gest file name in the File object.

Methods of Java FileWriter Class:

Method	Description
abstract void close ( )	Closes the stream, flushing it first.
abstract void flush ( )	Flushes the stream, that is, all output buffers are closed.
void write (char [ ], cbuf)	Writes an array of characters.
Abstract void write(char [ ], cbuf, int off, int len)	Writes a portion of an array of characters.
void write (String str)	Writes a string.
void write (String str, int off, int len)	Writes a portion of the string.

Java FileWriter Class Example:

import java.io.FileWriter;
import java.io.IOException;


public class File_writer {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		
		FileWriter fw = new FileWriter ("java.txt");
		fw.write("I want to Learn Java Programming....");
		fw.close();
	
		System.out.println("Program Build Successfully...");
	}

}

After writing the above code, right-click on the project folder and go to properties as shown below.